NASCAR only recommended the testing this season, but indicated to drivers that a preseason baseline screening could become mandatory as early as 2014. The baseline will be used to measure against test results after a driver has crashed when diagnosing a concussion.

The baseline testing will be performed through the widely-used neurocognitive assessment ImPACT test, which evaluates an athlete’s verbal and visual memory, processing speed and reaction time.

NASCAR said during Daytona Speedweeks it had identified 32 concussions in its three national series since 2004. Three were suffered in 2012, and one cost Dale Earnhardt Jr. two races last year.